25345669 has 2 divisors, whose sum is σ = 25345670. Its totient is φ = 25345668.

The previous prime is 25345637. The next prime is 25345699. The reversal of 25345669 is 96654352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14861025 + 10484644 = 3855^2 + 3238^2 .

It is a cyclic number.

It is not a de Polignac number, because 25345669 - 2⁵ = 25345637 is a prime.

It is a super-2 number, since 2×25345669² = 1284805874115122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25345699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12672834 + 12672835.

It is an arithmetic number, because the mean of its divisors is an integer number (12672835).

Almost surely, 2^25345669 is an apocalyptic number.

It is an amenable number.

25345669 is a deficient number, since it is larger than the sum of its proper divisors (1).

25345669 is an equidigital number, since it uses as much as digits as its factorization.

25345669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 40.

The square root of 25345669 is about 5034.4482319317. The cubic root of 25345669 is about 293.7432662407.

The spelling of 25345669 in words is "twenty-five million, three hundred forty-five thousand, six hundred sixty-nine".